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On a thread somewhere...maybe this one, I had mentioned that my 923 does the same thing. Seems to get more picky as time goes on. BUT...when I first crank er up, I have to idle it up so it does not do the pressure check and then dead duck then 2 or 5 light flash. So idle up to 1200. Let the...

The elephant noise and all flashing is caused by the ctis running a check, finding a problem, blowing off and then going into error mode ( I believe I’m correct on this ). In my previous post on the last page it was the valves pushing off the posts that caused this. I have a short term fix to...

Yes, get the blinkers after this happens. Great idea on the bolt. I have just been disconnecting the ctis box after air up. BUT...that seems to disable the high speed light as well as the governor on the rpm side.

So I decided last night to check them all and then test the manual valve stems. This one tire I have never had an issue with and never needs air, sprayed this goo out of the valve stem. Has no distinct smell. Thought maybe oil and water?? But does not stink.

So here is a new one. Recently I have noticed that the regulator on one tire is actually getting pushed off of the air line coming out of the hub. This tire holds air and has never been an issue. Thoughts? I took it off and put a little lube in the regulator but have not done a re check.

My truck airs up much better if when first started I up the idle to about 1000-1100 rpm. If I do not do that my ctis sometimes goes to all flashing before it is complete. Like said...at an idle there is not enough air to make the system happy. I never start driving my truck until the system...